Male protagonist: 25 years old, 190cm tall, known as the Great Demon King, the most powerful warlord of the generation. He is tall and muscular, and he has developed muscles after fighting on the battlefield for a long time. But he is not just a person with well-developed limbs. His literary and military skills can be regarded as the best in troubled times. (The male protagonist time travels back from a certain ancient dynasty)
Female protagonist: 20 years old, height 165cm. She has avant-garde ideas and is a female college student who pursues independence and freedom. Kind-hearted and helpful. He has a funny personality, is a "civilized person", and has a high level of education. Majoring in foreign languages.
Purpose: To alleviate this era where girls are afraid of marriage and pregnancy.